화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2010년 가을 (10/21 ~ 10/22, 대전컨벤션센터)
권호 16권 2호, p.1182
발표분야 고분자
제목 In situ Preparation of Fe3O4-graft-Poly(acrylic acid) composite in Supercritical CO2 and Its Adsorption Capacity of Water-Soluble Dyes
초록 Herein we report the synthesis of Fe3O4-graft-poly(acrylic acid) nanocomposite via dispersion polymerization of acrylic acid in supercritical carbon dioxide in presence of surface modified magnetite nanoparticles. Firstly, Fe3O4 nanoparticles were surface modified with a silane-coupling agents namely 3-(trimethoxysilyl)propylmethacrylate. Secondly, polyacrylic acid (PAA) chains were successfully grafted from the surface of Fe3O4, resulting in the formation of core-shell nanostructures. The obtained product was confirmed for chemical and physical structure using Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The analysis results of magnetic property indicated that composites were superparamagnetic. The adsorption of some dyes onto PAA-coated magnetite nanoparticles was investigated in phosphate buffer (pH 2-10) at 25°C. It indicated that the adsorption capacity increased with the increased in solution pH and with the increased in Fe3O4 contents in composites.
저자 Van Hoa Nguyen1, Yuvaraj Haldorai2, Quang Long Pham1, Tongqiang Zong2, 심재진1
소속 1School of Display and Chemical Engineering, 2Yeungnam Univ.
키워드 F3O4; composite
E-Mail
VOD VOD 보기
원문파일 초록 보기